The content of scientific theory itself offers no moral foundation for the personal conduct of life.

[There is] a duty in refusing to cooperate in any undertaking that violates the Constitutional rights of the individual. This holds in particular for all inquisitions that are concerned with the private life and the political affiliations of the citizens.

Once you can accept the universe as matter expanding into nothing that is something, wearing stripes with plaid comes easy.

We can understand almost anything, but we can't understand how we understand.

The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it.

I have made the Bhagwad Gita as the main source of my inspiration and guide for the purpose of scientific investigations and formation of my theories.

The longing to behold this pre-established harmony [of phenomena and theoretical principles] is the source of the inexhaustible patience and perseverance with which Planck has devoted himself ... The state of mind which enables a man to do work of this kind is akin to that of the religious worshiper or the lover; the daily effort comes from no deliberate intention or program, but straight from the heart.