All Things Are Only Transitory.

If We Could Do Away With Death, We Wouldn't Object; To Do Away With Capital Punishment Will Be More Difficult. Were That To Happen, We Would Reinstate It From Time To Time.

There Is Nothing More Frightful Than An Active Ignorance. [ger., Es Ist Nichts Schrecklicher Als Eine Thatige Unwissenheit.]

Doubt Grows With Knowledge.

The Credit Of Advancing Science Has Always Been Due To Individuals And Never To The Age.

Science Has Been Seriously Retarded By The Study Of What Is Not Worth Knowing And Of What Is Not Knowable.