inIn most cases it is easier to read than speak it because in reading you can take your own time and ther eisthere is usually no doubt about what word is used. inIn speaking it you need an active knowledge of words..their, their meaning, and pronounciationpronunciation. That is just a lot more than a passive knowledge required for reading.
OfcourseOf course this may all be different in languages that use a different alphabet... like japaneseJapanese, hindiHindi, thaiThai, arabicArabic, greekor Greek