Question your priorities often, make sure God always comes first.

The role of the infinitely small in nature is infinitely great.

It would seem to me that I was committing a theft if I were to let one day go by without doing some work.

Without theory, practice is but routine born of habit. Theory alone can bring forth and develop the spirit of invention. ... [Do not] share the opinion of those narrow minds who disdain everything in science which has not an immediate application. ... A theoretical discovery has but the merit of its existence: it awakens hope, and that is all. But let it be cultivated, let it grow, and you will see what it will become.

The only thing that can bring joy is work.

I give them experiments and they respond with speeches.

The grandeur of the acts of men are measured by the inspiration from which they spring.