
“We invent by intuition, though we prove by logic.”
Eminent Indians (1947)
C'est par la logique qu'on démontre, c'est par l'intuition qu'on invente.
Part II. Ch. 2 : Mathematical Definitions and Education, p. 129
Science and Method (1908)
C'est par la logique qu'on démontre, c'est par l’intuition qu'on invente.
Science et Méthode, 1908
“We invent by intuition, though we prove by logic.”
Eminent Indians (1947)
“It is through science that we prove, but through intuition that we discover.”
Internet Encyclopedia of Philosophy
“We know how we were born, but know not how we will die.”
Fragments of Markham's notes
The Nemesis of Faith (1849)
Context: It is alike self-contradictory and contrary to experience, that a man of two goods should choose the lesser, knowing it at the time to be the lesser. Observe, I say, at the time of action. We are complex, and therefore, in our natural state, inconsistent, beings, and the opinion of this hour need not be the opinion of the next. It may be different before the temptation appear; it may return to be different after the temptation is passed; the nearness or distance of objects may alter their relative magnitude, or appetite or passion may obscure the reflecting power, and give a temporary impulsive force to a particular side of our nature. But, uniformly, given a particular condition of a man's nature, and given a number of possible courses, his action is as necessarily determined into the course best corresponding to that condition, as a bar of steel suspended between two magnets is determined towards the most powerful. It may go reluctantly, for it will still feel the attraction of the weaker magnet, but it will still obey the strongest, and must obey. What we call knowing a man's character, is knowing how he will act in such and such conditions. The better we know him the more surely we can prophesy. If we know him perfectly, we are certain.
“We want better reasons for having children than not knowing how to prevent them.”
Hypatia (1925), Ch. 4
Context: We want better reasons for having children than not knowing how to prevent them. Nor should we represent motherhood as something so common and easy that everyone can go through it without harm or suffering and rear her children competently and well.
“We learn history not in order to know how to behave or how to succeed, but to know who we are.”
"The Idolatry of Politics", U.S. Jefferson Lecture speech (1986)
1930s, Wisehart interview (1930)