Gems from the Buddha-5:

Mind predominates. Everything proceeds from mind. In all things, the primordial element is mind. If a man speaks or acts with a purified mind, happiness accompanies him as closely as his inseparable shadow – Dhammapda

For detailed article on Dhammapada from Wikipedia:
http://en.wikipedia.org/wiki/Dhammapada

Gems from the Buddha-4:

If a man speaks or acts with an evil mind, suffering follows him as the wheel follows the hoof of the bullock that pulls the cart – Dhammapada

For detailed article on Dhammapada from Wikipedia:
http://en.wikipedia.org/wiki/Dhammapada

Gems from the Buddha-3:

All that we are is the result of what we have thought. If a man speaks or acts with an evil thought, pain follows him; If a man speaks or acts with a pure thought, happiness follows him, like a shadow that never leaves him – Buddha

Courtesy:

http://www.brainyquote.com/quotes/authors/b/buddha.html

Gems from Buddha-2

Do not believe what you have heard.
Do not believe in tradition because it is handed down many generations.
Do not believe in anything that has been spoken of many times.
Do not believe because the written statements come from some old sage.
Do not believe in conjecture.
Do not believe in authority or teachers or elders.

But after careful observation and analysis, when it agrees with reason and it will benefit one and all, then accept it and live by it.

- Gautama Buddha

Gems from Buddha-1: ‘Living Wisely and Earnestly’

The secret of health for both mind and body is not to mourn for the past, nor to worry about the future, but to live the present moment wisely and earnestly – Buddha