Anyone, if he has a will and basic knowledge, can create something substantial.

The opinion is the medium between knowledge and ignorance.

What we really are matters more than what other people think of us.

The roots of all goodness lie in the soil of appreciation for goodness.

All the knowledge I possess everyone else can acquire, but my heart is all my own.

Never stop learning; knowledge doubles every fourteen months.

True friendship can afford true knowledge. It does not depend on darkness and ignorance.

All the knowledge I possess everyone else can acquire, but my heart is all my own.

I prefer tongue-tied knowledge to ignorant loquacity.

Knowledge is love and light and vision.