Definitions: (1) expanding; reaching <stretching the limits of imagination>; (2) opening the mind beyond its previous boundaries <resulting in new extents>; (3) elongating something that has the ability to return to its original shape; (4) going beyond an original ability <usually with effort>; (5) extending over a distance <stretching your thoughts even to the heavens>

• Man’s mind stretched to a new idea never goes back to its original dimension. — Oliver Wendell Holmes, Sr. (1809-1894) American polymath [six disciplines]
• I believe in Liberty for all men: the space to stretch their arms and their souls, the right to breathe and the right to vote, the freedom to choose their friends, enjoy the sunshine, and ride on the railroads, uncursed by color; thinking, dreaming; working as they will in a kingdom of beauty and love. — William Edward Burghardt [W. E. B.] Du Bois (1868–1963) American sociologist