It is fairly well known in English but it's a little "literary." Depending on the audience, it might be necessary to explain it.
I guess it is a fable or story that exists in a number of languages, but in English it's almost always a reference to "The Blind Men and the Elephant." by John Godfrey Saxe. It begins:
It was six men of Indostan
To learning much inclined,
Who went to see the Elephant
(Though all of them were blind),
That each by observation
Might satisfy his mind.
The First approached the Elephant,
And happening to fall
Against his broad and sturdy side,
At once began to bawl:
"God bless me! but the Elephant
Is very like a wall!"
The Second, feeling of the tusk,
Cried, "Ho, what have we here,
So very round and smooth and sharp?
To me 'tis mighty clear
This wonder of an Elephant
Is very like a spear!"
The others touch different parts and declare that the elephant is like a snake, a tree, a fan, or a rope. Saxe concludes:
And so these men of Indostan
Disputed loud and long,
Each in his own opinion
Exceeding stiff and strong,
Though each was partly in the right,
And all were in the wrong!