Mathematics is the foundation upon which we build our understanding of the world, and it is through this understanding that we can solve the most complex problems.
Mental phenomena are best understood in terms of their functions.
Learning is not a matter of trial and error, but of insight.
I am the happiest creature in the world. Perhaps other people have said so before, but not one with such justice. I am happier even than Jane; she only smiles, I laugh.
She realized that sometimes, the hardest thing to do is to let go.
Innovation is not just about creating something new; it's about making a difference in people's lives.