《Tomorrow Never Knows》是The Beatles演唱的歌曲，由John Lennon、Paul McCartney、George Harrison作詞作曲，收錄於專輯《Magical Mystery Tour》中。
歌詞全文如下：
Across the universe
In a place so far away
You'll learn to love today
Tomorrow never knows
In a world so far away
So many things to say
You've got to learn to let it go
Tomorrow never knows
The master said to the fool
You'll find your answers soon
Just play the music well
Tomorrow never knows
It's only changing all the time
The message in the rhyme
Just play the music well
Tomorrow never knows
In a place so far away
So many things to stay
You've got to learn to let it go
But you'll be there again tomorrow never knows
Let it all go free your mind (your mind)
Relax your soul, no pain, no gain (no pain, no gain)
There's a way through every maze (every maze)
To find the one, never know, what you'll face (never know)
On the run for fun and games (for fun and games)
Chasing phantoms with a haze (with a haze)
Wish you luck and love on your way (your way)
Going back for more Tomorrow never knows (never knows)
Go... ohhh ohhh ohhh ohhh ohhh ohhh ohhh ohhh ohhh ohhh ohhh ohhh ohhh ohhh ohhh ohhh ohhh ohhh ohhh ohhh ohhh ohhh ohhh ohhh ohhh ohhh ohhh ohhh ohhh ohhh ohhh ohhh ohh...
Ohhh ohhh ohhh ohh...
Tomorrow never knows.
Tomorrow never knows.
Tomorrow never knows.
Tomorrow never knows.
Tomorrow never knows.
Tomorrow never knows.
Tomorrow never knows.
Tomorrow never knows.
Tomorrow never knows.
Tomorrow never knows.
Tomorrow never knows.
Ohh...ohh...ohh...ohh...ohh...ohh...ohh...ohh...ohh...ohh...ohh...ohh...ohh...ohh...ohh...ohh...ohh...ohh...ohh...ohh...ohh...ohh...ohh...ohh...oh!
Oh! Oh! Oh! Oh! Oh! Oh! Oh! Oh! Oh! Oh! Oh! Oh! Oh! Oh! Oh! Oh! Oh! Oh! Oh! Oh! Oh! Oh! Oh! Oh! Oh! 歌曲最後的一剎那,狂亂中有不羈,激動中有深思。這也是The Beatles一直追求的效果，無論從音樂的起伏跌宕還是歌詞的主題。他們在小中蘊藏著哲理。儘管很多人會將它簡單化的歸於迷幻搖滾，但是這首歌所包含的哲理遠遠超過了迷幻這個概念。它是在告訴我們：明天永遠不會知道，就像我們永遠不會知道明天會發生什麼一樣。我們只能活在當下，活在現在，去感受生活，去愛生活。這首歌曲是披頭士樂隊最具爭議的一首歌曲之一，也是樂隊成員們最為滿意的一首歌曲之一。它所包含的哲理遠遠超過了迷幻這個概念。它是在告訴我們：明天永遠不會知道，就像我們永遠不會知道明天會發生什麼一樣。我們只能活在當下，活在現在，去感受生活，去愛生活。這首歌曲充滿了一代人的憂傷與無奈，道出了所有人對於時間、未來和生命的迷惑與無奈，它的前衛性無法簡單地以好壞來評價。儘管它在當年的銷量並不出色，但在十幾年後的今天它依然受到人們的喜愛和追捧。這就是經典的力量！無論歲月如何流逝，經典依然會熠熠生輝！