Life is not easy for any of us. But what of that? We must have perseverance and above all confidence in ourselves. We must believe that we are gifted for something, and that this thing, at whatever cost, must be attained.

It is my earnest desire that some of you should carry on this scientific work and keep for your ambition the determination to make a permanent contribution to …

Nothing in life is to be feared, it is only to be understood. Now is the time to understand more, so that we may fear less.

In science, we must be interested in things, not in persons.