Straightforward

Definition: possessing undeviating rectitude; upright; honest; open; frank; candid

Idiom: Call a fig a fig and a trough a trough — Plutarch (6–119) Greek philosopher
     Note: The origin of “Call a spade a spade.”

Quotes:
• You can run faster if you don’t run into walls. — Jerry Downs (1949 -) American Sage
• Speech devoted to truth should be straightforward and plain — Lucius Annaeus Seneca the Younger (c. 4 bc – ad 65) Roman Stoic philosopher
• Divine principles and values are straightforward and clear; they are beautiful, profound, and powerful; and they can definitely help us to avoid future regrets. — Dieter Friedrich Uchtdorf (1940-) German aviator & religious leader

Symbol: a straight line