If you take the one, you'd better take both ''.

`` If you can conveniently let me have twenty dollars '', he wrote one friend in 1791 when he was Secretary of the Treasury.

If one dancer slaps another, the victim may do a pirouette, sit down, or offer his assailant a fork and spoon.

If a child had a single drop of Negro blood, he would revert to the ancestral line which, except as slaves under a superior race, had not made one step of progress in 3,000 years.

If we examine the three types of change from the point of view of their internal structure we find an additional profound difference between the third and the first two, one that accounts for the notable difference between the responses they evoke.

If in any one calculation Ptolemy had had to invoke 83 epicycles all at once, while Copernicus never required more than one third this number, then ( in the sense obvious to Margenau ) Ptolemaic astronomy would be simpler than Copernican.

If within one year you can make a success out of the American, you can practically name your own salary thereafter.

If it is not one of his best books, it can only be considered unsatisfactory when compared with his own Garibaldi.

If one finger is raised against the authorities, all our moral power will vanish.

If any one of them has any power to veto the Secretary General's decisions the nature of the organization will have changed.

If he can bounce back with one of those 25 home runs years, the club will have to be better off offensively.

If they do meet and recognize one another, slap backs and embrace, the moment soon is done.

If either one ever started making promises, there is no telling where the promises would end.

If one follows the reports of the Congress, one finds that there still seems considerable uncertainty in the minds of the leaders themselves about what exactly to do in this matter.

Somebody, got to be somebody If I don't put my two cents in soon, somebody else will I know they're waitin only for one thing: for the bastards what done it to be nailed.

If we had, then one of us would have had to go instead.

`` If I catch you one more time down here without stockings '' --

If, for some reason such as economy, we are not going to develop aircraft nuclear propulsion with a sense of national urgency, then we should turn our effort to developing jet engines with a thrust-to-weight ratio of 12 or 15 to one.

If you don't own a planer and don't want to buy one, it's well worth renting.

Note: If 1/2-inch panel board is used inside and out, or 5/8-inch one side and 3/8-inch the other, and 1/8-inch glass is used, stock lumber in Af, Af, and Af can be used in making the glass panels.

If you have a full-time doctor now, can he be replaced with a part-time doctor or one who serves on a fee-per-case basis only??

If you use one of the new year-round cooling system fluids such as `` Dowguard '' be sure to check it.

If you run into excess plug fouling on one truck, check to be sure that the rig has a thermostat.

Survivor Jim McLoughlin states in One Common Enemy that Hartenstein asked him if he was in the Royal Navy, which he was, and then asked why a passenger ship was armed, stating, " If it wasn't armed, I would not have attacked.

If an airliner is defined as a plane intended for carrying multiple passengers in commercial service, the Russian Sikorsky Ilya Muromets was the first official passenger aircraft.

If the flights are not codeshared, then the second airline has no responsibility if the passenger or luggage misses the second flight due to a delay with the first.

If a vehicle is accessible to the player, they can take the position of driver or simply ride in the vehicle as a passenger.

If the oxygen pressure in the cabin drops below a safe level, risking hypoxia, compartments containing the oxygen masks will open automatically, either above or in front of the passenger and crew seats, and in the lavatories.

If suspicious behavior is observed a passenger will be subjected to additional screening.

If a train crew's route, or tour of duty, exceeds a single shift, or is in conflict with any rules pertaining to a legal or contractual limit to the number of hours that can be worked, more than one crew may be assigned, each with its own conductor, while onboard service crew members aboard passenger trains normally remain on duty for the entire run, including their assigned meal and sleep breaks.

If a passenger got off the stage to rest, he might be stuck in that place for a week or more, or longer if the next stage had no available seats.

If it is a call from a commercial airline passenger radiotelephone, the call is then forwarded to a verification center to process credit card or calling card information.

If completed, the existing terminal building would be expanded to the east and a new passenger concourse ( the " International Concourse ") with nine gates would be added, increasing the number of boarding gates to 26.

If the chairlift stops suddenly ( as from use of the system emergency brake ), the carrier's arm connecting to the grip pivots smoothly forward — driven by the chair's inertia — and maintains friction ( and seating angle ) between the seat and passenger.

If a passenger fails to unload, their legs will contact a lightweight bar, line, or pass through a light beam which stops the lift.

If a second Café Car is present, it is only used for passenger seating.

If, however, a passenger touches their card at a standalone Oyster reader ( such as the one by the manual gates ), the system will see this as starting a new journey rather than ending one, and will deduct a maximum cash fare from the card.

If correct, she would be the first woman passenger in an aeroplane.

If the local passenger train from Carlisle to Beattock was due to be shunted at Quintinshill then the signalmen at Gretna would advise whichever was working the early shift of this and the day signalman would hitch a ride on the local train to Quintinshill, thus saving himself the walk from Gretna.

If a passenger arrives late for a flight, their luggage will sometimes not have enough time to be loaded onto the plane.

If a baggage is never recovered, it is usually because it has been mistaken by another passenger as his or her own baggage.

If a rider does not possess a valid proof-of-payment, a citation will be issued ( similar to a traffic ticket ) and a penalty will be imposed when a court finds the passenger guilty of non-payment.

If one considers a moving initial position, or equivalenty a moving origin ( e. g. an initial position or origin which is fixed to a train wagon, which in turn moves with respect to its rail track ), the velocity of P ( e. g. a point representing the position of a passenger walking on the train ) may be referred to as a relative velocity, as opposed to an absolute velocity, which is computed with respect to a point which is considered to be ' fixed in space ' ( such as, for instance, a point fixed on the floor of the train station ).

If a passenger's identification is insufficient to differentiate that passenger from a name on the No-Fly List, the airline will refuse to issue a boarding pass and tell the passenger to contact the TSA.

If this were eventually achieved it could allow the extension of Dartmoor Railway passenger services and provide the possibility of interchange with the Exeter-Barnstaple " Tarka line ".

If needed, two ICN trains can be combined to double the passenger capacity.