Philo Judaeus De Josepho 142

[142] And men awake too, who, as far as the uncertain character of their comprehensions goes, are in no respect different from people asleep, deceiving themselves, think themselves competent to contemplate the nature of things with reasoning powers which cannot err; in whose case every one of their external senses is a hindrance to knowledge, being hurried by spectacles, and by peculiarities of flavours or odours, to which they incline, and by which they are perverted, and in consequence of which they prevent any part of the soul from being in a sound state, and from advancing without stumbling as if along a level road. And humble pride, and great littleness, and all other similar states which are made up of inequality and anomaly, compel men to walk in a sort of giddiness, and create great dizziness and perplexity.