Believe in yourself even when no one else does, because that's when it matters most.

Mathematics is the foundation upon which the edifice of science is built.

Be kind, for everyone you meet is fighting a hard battle.

The world is full of obvious things which nobody by any chance ever observes.

Dream starts, perseverance leads to victory.

艺术作品是艺术家与其材料之间斗争的结果。