If You Want To Discover New Oceans,

If You're Not A Liberal At Twenty You Have No Heart, If You're Not A Conservative At Forty, You Have No Brain.

All Wisdom Is Not New Wisdom.

Writing A Long And Substantial Book Is Like Having A Friend And Companion At Your Side, To Whom You Can Always Turn For Comfort And Amusement, And Whose Society Becomes More Attractive As A New And Widening Field Of Interest Is Lighted In The Mind.

One Can Usually Put One's Thoughts Better In One's Own Words.

An Optimist Sees The Oportunity In Every Difficulty.