Strenuous intellectual work and the study of God's Nature are the angels that will lead me through all the troubles of this life with consolation, strength, and uncompromising rigor.

Without deep reflection one knows from daily life that one exists for other people.

People will not disarm step by step; they will disarm at one blow or not at all.

If A is a success in life, then A equals x plus y plus z. Work is x; y is play; and z is keeping your mouth shut

There comes a time when the mind takes a higher plane of knowledge but can never prove how it got there.

Every reminiscence is colored by the way things are today, and therefore by a delusive point of view.

Every serious scientific worker is painfully conscious of this involuntary relegation to an ever-narrowing sphere of knowledge, which threatens to deprive the investigator of his broad horizon and degrades him to the level of a mechanic.