You can't let praise or criticism get to you. It's a weakness to get caught up in either one.

A tree is a wonderful living organism which gives shelter, food, warmth and protection to all living things. It even gives shade to those who wield an axe to cut it down.

Success is not about being fearless; it's about facing your fears and taking action anyway.

Be yourself. Everyone else is already taken.

Science is a wonderful thing if one does not have to earn one's living at it.

We are what our thoughts have made us; so take care about what you think. Words are secondary. Thoughts live; they travel far.

There is no exercise better for the heart than reaching down and lifting people up.