Facts are the air of a scientist. Without them you never can fly. Without them your "theories" are vain efforts.


Bequest of Pavlov to the Academic Youth of His Country, Science, Volume 83, Number 2155, April 17, 1936 (p. 369)

Ivan Pavlov Quotes

Facts are the air of a scientist. Without them you never can fly. Without them your theories are vain efforts.

Facts are the air of a scientist. Without them you never can fly. Without them your theories are vain efforts.

Facts are the air of a scientist. Without them you never can fly. Without them your theories are vain efforts.

Facts are the air of a scientist. Without them you never can fly. Without them your theories are vain efforts.