The progress of Science consists in observing interconnections and in showing with a patient ingenuity that the events of this ever-shifting world are but examples of a few general relations, called laws. To see what is general in what is particular, and what is permanent in what is transitory, is the aim of scientific thought.

...the self-satisfied dogmatism with which mankind at each period of its history cherishes the delusion of the finality of existing modes of knowledge.

From the moment of birth we are immersed in action, and can only fitfully guide it by taking thought.

I always feel that I have two duties to perform with a parting guest: one, to see that he doesn't forget anything that is his; the other, to see that he doesn't take anything that is mine.

The deepest definition of youth is life as yet untouched by tragedy.

It is the business of the future to be dangerous; and it is among the merits of science that it equips the future for its duties.

Thus the negative perception is the triumph of consciousness.