What you are doing is correct. Look at the following example:
mysql> create table baz (data TEXT);
Query OK, 0 rows affected (0.20 sec)
mysql> insert into baz (data) values ("Four score and seven years ago, our fathers brought forth on this continent a new nation, conceived in liberty and dedicated to the proposition that all men are created equal");
Query OK, 1 row affected (0.06 sec)
mysql> select data from baz\G
*************************** 1. row ***************************
data: Four score and seven years ago, our fathers brought forth on this continent a new nation, conceived in liberty and dedicated to the proposition that all men are created equal
1 row in set (0.00 sec)
If you don't see any "data", then it means the field is empty, or contains only whitespace.
EDIT:
If you're seeing "boxes" as you state in your comment, then it could be a character encoding mismatch, or possibly you have binary data in your TEXT field. Please provide the output from the following:
SHOW CREATE TABLE foo;
SHOW VARIABLES LIKE 'character_set%';
SHOW VARIABLES LIKE 'collation%';