Logic is the art of making truth prevail.
Logic ignores the almost, just as the sun ignores the candle.
Logic is a wonderful invention. It is so wonderful, people often mistake it for reason. Reason, however, requires sense. Logic requires only consistency.
...logical validity is not a guarantee of truth.
A just cause needs no interpreting. It carries its own case. But the unjust argument since it is sick, needs clever medicine.
Logic must look after itself. In a certain sense, we cannot make mistakes in logic.
I look upon logical proofs the way a well-bred girl looks upon a love letter
I can make a valid argument that Bobby Heenan is pro wrestling's great performer.
Before anything can be reasoned upon to a conclusion, certain facts, principles, or data, to reason from, must be established, admitted, or denied.
An argument can be logically valid, but unsound in that it contains a false premise and, therefore, leads to a false conclusion (e.g., Scientists are smart; smart people do not make mistakes; therefore, scientists do not make mistakes).
