Know Or Listen To Those Who Know.

Know How To Ask. There Is Nothing More Difficult For Some People, Nor For Others, Easier.

Knowledge Without Courage Is Sterile.

Many Would Be Wise If They Did Not Think Themselves Wise.

Wise Men Appreciate All Men, For They See The Good In Each And Know How Hard It Is To Make Anything Good.

Know How To Choose Well. Most Of Life Depends Thereon. It Needs Good Taste And Correct Judgment, For Which Neither Intellect Nor Study Suffices.