Logic is the beginning of wisdom, not the end.Mister Spock in Star Trek
Humans do have an amazing capacity for believing what they choose - and excluding that which is painful.Mister Spock in Star Trek, Season 3 Episode 4
Insults are effective only where emotion is present.Mister Spock in Star Trek, Season 2 Episode 2
Madness has no purpose. Or reason. But it may have a goal.Craziness & WeirdnessMister Spock in Star Trek, Staffel 1 Episode 27
The needs of the many outweigh the needs of the few.Mister Spock in Star Trek, II: The Wrath of Khan
Evil does seek to maintain power by suppressing the truth.Mister Spock in Star Trek
I fail to comprehend your indignation, sir. I have simply made the logical deduction that you are a liar.Mister Spock in Star Trek
I have been, and always shall be, your friend. Live long and prosper.Mister Spock in Star Trek, II: The Wrath of Khan
Computers make excellent and efficient servants, but I have no wish to serve under them.Computer, Artificial IntelligenceMister Spock in Star Trek, Staffel 2 Episode 24
Change is the essential process of all existence.Mister Spock in Star Trek, Season 3 Episode 15
Curious, how often you humans manage to obtain that which you do not want.Mister Spock in Star Trek, Staffel 1 Episode 26
Instruments register only through things they're designed to register. Space still contains infinite unknowns.Mister Spock in Star Trek, Season 1 Episode 4
I object to intellect without discipline; I object to power without constructive purpose.PowerMister Spock in Star Trek, Season 1 Episode 17
Computer. This is a Class-A compulsory directive. Compute, to the last digit, the value of pi.Mister Spock in Star Trek, Season 2 Episode 14
After a time, you may find that having is not so pleasing a thing, after all, as wanting. It is not logical, but it is often true.Ambition, Money, SatisfactionMister Spock in Star Trek, Season 2 Episode 1
I have never understood the female capacity to avoid a direct answer to any question.WomenMister Spock in Star Trek, Season 1 Episode 24
Insufficient facts always invite danger.Mister Spock in Star Trek, Season 1 Episode 22
Spock: "Your illogical approach to chess does have its advantages on occasion, Captain."
Kirk: "I'd prefer to call it inspired."
Spock: "As you wish."
What makes one man an exceptional leader? We see indications that it's his negative side which makes him strong, that his evil side, controlled and disciplined, is vital to his strength. Your negative side removed from you, the power of command begins to elude you.Mister Spock in Star Trek, Season 1 Episode 5