Success comes from curiosity, concentration, perseverance and self criticism.

By academic freedom I understand the right to search for truth and to publish and teach what one holds to be true. This right also implies a duty: one must not conceal any part of what one has recognized to be true.

God does not play dice.

That which is impenetrable to us really exists. Behind the secrets of nature remains something subtle, intangible, and inexplicable. Veneration for this force beyond anything that we can comprehend is my religion.

Wisdom is not a product of schooling but of the lifelong attempt to acquire it.

There is no logical way to the discovery of these elemental laws. There is only the way of intuition, which is helped by a feeling for the order lying behind the appearance.

Anyone who doesn't take truth seriously in small matters cannot be trusted in large ones either.