For scientific endeavor is a natural whole the parts of which mutually support one another in a way which, to be sure, no one can anticipate.

The state exists for man, not man for the state. The same may be said of science. These are old phrases, coined by people who saw in human individuality the highest human value. I would hesitate to repeat them, were it not for the ever recurring danger that they may be forgotten, especially in these days of organization and stereotypes.

Man owes his strength in the struggle for existence to the fact that he is a social animal.

.. free and responsible development of the individual, so that he may place his powers freely and gladly in the service of all mankind. There is no room in this for the divinization of a nation, of a class, let alone of an individual. Are we not all children of one father, as it is said in religious language?

A conflict arises when a religious community insists on the absolute truthfulness of all statements recorded in the Bible. This means an intervention on the part of religion into the sphere of science; this is where the struggle of the Church against doctrines of Galileo and Darwin belongs.

The difference between what the most and the least learned people know is inexpressibly trivial in relation to that which is unknown.

Genius is 1% talent and 99% percent hard work.